Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aefbd591d5db19bb2d3e61582b3217f755e80d3267060d1d6b91f69026c75a76' 
  AND token = 'mWUDqzbgFNNG4tYBoygHegCMnx/OmqOeOD6f2tREtlg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}